package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBrandTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.sun.org.apache.bcel.internal.generic.NEW;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

@Slf4j
@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    SpuImagesService spuImagesService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService productAttrValueService;

    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;


    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * //TODO 高级部分完善
     *
     * @param vo
     */
    @Override
    @Transactional
    public void saveSpuInfo(SpuSaveVo vo) {
        //1.保存Spu基本信息:pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        //如果User和UserActionForm 间存在名称不相同的属性，则BeanUtils不对这些属性进行处理，需要手动处理
        //BeanUtils.copyProperties("要转换的类", "转换后的类");
        BeanUtils.copyProperties(vo, infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);

        //2.保存Spu的描述图片:pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",", decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);

        //3.保存Spu的图片集:pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(infoEntity.getId(), images);

        //4.保存Spu的规格参数:pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(attr.getAttrId());

            AttrEntity id = attrService.getById(attr.getAttrId());
            valueEntity.setAttrName(id.getAttrName());
            valueEntity.setAttrValue(attr.getAttrValues());
            valueEntity.setQuickShow(attr.getShowDesc());
            valueEntity.setSpuId(infoEntity.getId());
            return valueEntity;
        }).collect(Collectors.toList());
        productAttrValueService.saveProductAttr(collect);

        //5.保存Spu的积分信息:gulimall_sms(优惠) -> sms_spu_bounds(积分表)
        //远程调用Coupon优惠服务
        Bounds bounds = vo.getBounds();
        SpuBrandTo spuBrandTo = new SpuBrandTo();
        BeanUtils.copyProperties(bounds, spuBrandTo);
        spuBrandTo.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBrandTo);
        if (r.getCode() != 0) {
            log.error("远程保存Spu积分信息失败--->" + r.getCode());
        }

        //6.保存当前Spu对应的所有Sku信息
        //6.1).Sku的基本信息:pms_sku_info
        List<Skus> skus = vo.getSkus();
        //每个Sku自增出来的主键需要与图片信息/销售属性相关联,建议采用forEach一条一条遍历
        if (skus != null && skus.size() > 0) {
            skus.forEach(item -> {
                String defaultImg = "";
                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1) {
                        defaultImg = image.getImgUrl();
                    }
                }

                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);

                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();
                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity -> {
                    //返回True就是需要,返回false就是剔除
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());

                //6.2).Sku的图片信息:pms_sku_images
                //TODO没有图片,路径无需保存
                skuImagesService.saveBatch(imagesEntities);

                //6.3).Sku的销售属性:pms_sku_sale_attr_value
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, skuSaleAttrValueEntity);
                    skuSaleAttrValueEntity.setSkuId(skuId);
                    return skuSaleAttrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                 /*6.4).Sku的优惠,满减等信息:gulimall_sms(优惠)
                        ->sms_sku_ladder(折扣表)
                             sms_sku_full_reduction(满减表)
                                 sms_member_price(会员价格表)*/
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item, skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1) {
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);

                    if (r1.getCode() != 0) {
                        log.error("远程保存Sku优惠信息失败--->" + r1.getCode());
                    }
                }

            });
        }


    }

    /**
     * 1.保存Spu基本信息:pms_spu_info
     *
     * @param infoEntity
     */
    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {

        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<SpuInfoEntity>();
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((w) -> {
                w.eq("id", key)
                        .or()
                        .like("spu_name", key);
            });
        }
        //status=1 and (id=1 or spu_name like xxx)
        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status) && !"0".equalsIgnoreCase(status)) {
            wrapper.eq("publish_status", status);
        }
        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)) {
            wrapper.eq("brand_id", brandId);
        }
        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)) {
            wrapper.eq("catalog_id", catelogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );
        return new PageUtils(page);
    }

    /**
     * 商品上架
     *
     * @param spuId
     */
    @Override
    public void up(Long spuId) {
        //1.查出当前SpuId对应的所有Sku信息-品牌名...
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        //TODO 4.查询当前sku的所有可以被用来检索的规格属性
        List<ProductAttrValueEntity> entities = productAttrValueService.baseListForSpu(spuId);
        List<Long> attrIds = entities.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());
        //过滤出一个用于检索的集合
        List<Long> searchAttrId = attrService.selectSearchAttrIds(attrIds);
        Set<Long> idSet = new HashSet<>(searchAttrId);
        List<SkuEsModel.Attrs> attrsList = entities.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs1);
            return attrs1;
        }).collect(Collectors.toList());

        //TODO 1.发送远程调用,库存系统查询是否有库存
        Map<Long, Boolean> stockMap=null;
        try {
            R r = wareFeignService.getSkusHasStocke(skuIdList);

            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {
            };

            stockMap = r.getData(typeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, item -> item.getHasStock()));
        } catch (Exception e) {
            log.error("库存服务查询异常:{}", e);
        }

        //2.封装每个Sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            //组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku, esModel);
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());

            //TODO 2.热度评分.O 拓展(一般的商品刚上架评分是比较高的)
            //设置库存信息
            if(finalStockMap ==null){
                esModel.setHasStock(true);
            }else{
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }

            esModel.setHotScore(0L);

            //TODO 3.查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(esModel.getBrandId());//查询品牌信息
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());

            CategoryEntity category = categoryService.getById(esModel.getCatalogId());//查询分类信息
            esModel.setCatalogName(category.getName());

            //设置检索属性
            esModel.setAttrs(attrsList);

            return esModel;
        }).collect(Collectors.toList());

        //TODO 5.将数据发送给ES进行保存:gulimall-search(检索服务)
        R r = searchFeignService.productStatusUp(upProducts);
       if(r.getCode()==0){
           //远程调用成功
           //TODO 6.修改当前商品的状态
           baseMapper.updateSpuSratus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
       }else{
           //远程调用失败
           //TODO 7.重复调用?接口幂等性,重试机制?xxx
           /**
            *   Feign调用流程   SynchronousMethodHandler.class
            * 1.构造请求数据,将对象转为JSON:
            *   RequestTemplate template = this.buildTemplateFromArgs.create(argv);
            * 2.发送请求进行执行(执行成功会解码响应数据):执行成功会解码响应数据
            *   return this.executeAndDecode(template, options);
            * 3.执行请求会有重试机制
            *        while(true) {
            *             try {
            *                 return this.executeAndDecode(template, options);
            *             } catch (RetryableException var9) {
            *                 RetryableException e = var9;
            *                 try {
            *                     retryer.continueOrPropagate(e);
            *                 } catch (RetryableException var8) {
            *                     Throwable cause = var8.getCause();
            *                     if (this.propagationPolicy == ExceptionPropagationPolicy.UNWRAP && cause != null) {
            *                         throw cause;
            *                     }
            *                     throw var8;
            *                 }}}
            *
            */
       }
    }


}